Jack for boots or shoes



(No Model.)

B. D. LEE.

- JACK FORBOOTS OB. SHOES.

Patented Apr. 20,1886,

n. PETERS. PholwUihOgnphcr. Wnlhinglofl, n. c.

ihiira ST TES EVERETT D. LEE, OF BOSTON, MASSACHUSETTS JACK FOR BOOTS ORSHOES.

SPECIFICATION forming part of Letters Patent NO.340.331, dated April 20,1886.

Application filed January 18, 1886.

.To ctZZ whom it may concern.-

Be it known that I, EVERETT D. LEE, of Boston, in the county of Suffolkand State of Massachusetts, have invented certain new and usefulimprovements in Jacks for the Mannfacture of Boots or Shoes, of whichthe following is a specification.

My invention relates to jacks employed in the manufacture of boots andshoes, and has for its object to improve the means for pressing thespindle by which the last is sup ported toward the toe-rest, thuspressing the toe of the last firmly against said rest.

My invention consists in the improvements hereinafter described,andsubsequently pointed out in the claim.

In the drawings hereto annexed, and forming a part of thisspecification, Figure 1 is a side view of a jack embodying myimprovements. Fig. 2 is a rear view of the upper end of the arm to whichthe last is secured, and by which it is supported. Fig. 3 is a verticalsection on the line a: a; of Fig. 2.

Similar letters of reference indicate similar parts in all of thefigures.

a represents the base or socket for the sphere b, and supporting theframe 0, the latter being swiveled to the sphere and adapted to beclamped thereon, as shown. The base or socket is provided withextensions d d, to the latter of which are pivoted clampinglevers e e,for clamping the sphere in the socket.

The frame a is constructed to support the shank f, provided on itsforward end with the toe-rest 9, said shank and rest being adjustable onthe frame, to adapt the jack to boots and shoes of varying sizes.

The jack thus far described is identical with that discovered in theapplication of Henry T. Morse, filed in the United States PatentOfficeNovember 5, 1885, Serial No. 181,893, the invention forming thesubjectmatter of which application is assigned to part of said arm h.Said upper end, 1'', is provided with the usual last-holding pin, j,formed Serial No. 188,907. (No model.)

integral therewith or set therein in any suitable way. The base of end iis cylindrical in form,'and at its rear is provided with adownwardly-projecting finger, 7c, somewhat enlarged at its upper end,which finger fits in a correspondinglyshaped slot, 70', in the rear ofthe upper end of arm h. A pin, Z, by which said part t is pivoted to armh, passes through the ears on on, forming the sides of slot k, andthrough the enlarged part of the finger, as clearly represented in thedrawings. A chamber, a, is formed in arm h at the lower end of sloth,and extends nearly through said arm. 7

A small screw-threaded hole adapted to receive a screw-threaded shank,0, of a follower, 0, is formed through arm h from the bottom of chambera. A spiral spring, 19, is placed in said chamber; with one of its endsresting against said follower and the other against the lower end offinger h, at

which latter point it is sustained in position by a pin, q.

By the construction shown and described it will be seen that spring p,bearing against the lower end of finger R, will swing pivoted part i ofarm h audits last-holding pinj toward the toe-rest g, and press the toeof the last against said rest, and the degree of force of such pressurecan be regulated by follower 0 and the screw-threaded connection of itsshank with arm h of the frame, as will be readily understood.

The adjustability of the force with which the spring presses pivotedpart 1' toward the toe-rest and the toe of the last upon or against saidrest is a matter of great importance in jacks of this class, as indifferent kinds of work it is desirable to have said spring operate withdifierent degrees of force.

By my improvement in the mechanism to secure the results mentioned I amenabled to simplify and cheapen the construction of the jack, and makeitfree on all sides from obstructions of any and all kinds which wouldbe liable to catch the thread and impede operations on the boot or shoe.

I claim- The combination, with the frame and its last-supporting arm h,provided with the slot scribing witnesses, this 15th day of J nnuary, k,ears m m, and chamber 1:, of the part i, 1886. provided with thelast-holding pin j, and finger k, pin Z, follower 0, and spring 10, asset EVERETT 5 lort-h. Witnesses:

In testimony whereof Ihave signed my name ARTHUR W. CROSSLEY,

to this specification, in thepresence of two sub- H. E. BROWN.

